Canadian Geographic - - CONTENTS -

Bow­head ex­fo­li­a­tion, an­cient bear teeth, pere­grine progress and more

Cana­dian sci­en­tists have found ev­i­dence that bow­head whales in Cum­ber­land Sound, Nu­navut, shed their dead skin by rub­bing against large rocks. Re­searchers with the Univer­sity of Bri­tish Columbia’s Ma­rine Mam­mal Re­search Unit who saw the whales en­gage in the pre­vi­ously un­doc­u­mented be­hav­iour said that it ap­pears to help the mam­mals slough off dead skin, along with any ac­cu­mu­lated mi­cro-al­gae and par­a­sites, which in turn may help main­tain a healthy ap­pear­ance and im­prove skin func­tion by stim­u­lat­ing the growth of new tis­sue.

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